Materialize collapsible and modal initialization and afterFlush

I have a problem with autorun a initializing of collapsible list and a modal trigger. By that i mean i have an iterator that contains a materialize card with collapsible list and button that triggered modal block. In “onRendered” of this template i have something like this(i write code in coffeescript)

@autorun ->
    Tracker.afterFlush ->

Button, that not changed reactively(not in {{#each}} block, fo example) is working normally, but one that in the iterator are now response to click event. Maybe someone knows how to make this thing work?